HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 392)

Touch Probe Cycles: Automatic Workpiece Inspection
16.13 MEASURE PLANE (Cycle 431, DIN/ISO: G431, software option 17)
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TNC 620 | User's Manual Cycle Programming | 5/2013
16.13 MEASURE PLANE (Cycle 431, DIN/ISO:
G431, software option 17)
Cycle run
Touch Probe Cycle 431 finds the angle of a plane by measuring
three points. It saves the measured values in system parameters.
1 Following the positioning logic (See "Executing touch probe
cycles", page 280), the TNC positions the touch probe at rapid
traverse (value from
FMAX column) to the programmed starting
point 1 and measures the first touch point of the plane. The TNC
offsets the touch probe by the safety clearance in the direction
opposite to the direction of probing.
2 The touch probe returns to the clearance height and then moves
in the working plane to starting point 2 and measures the actual
value of the second touch point of the plane.
3 The touch probe returns to the clearance height and then moves
in the working plane to starting point 3 and measures the actual
value of the third touch point of the plane.
4 Finally the TNC returns the touch probe to the clearance
height and saves the measured angle values in the following Q
parameters:
Parameter number Meaning
Q158 Projection angle of the A axis
Q159 Projection angle of the B axis
Q170 Spatial angle A
Q171 Spatial angle B
Q172 Spatial angle C
Q173 to Q175 Measured values in the touch probe
axis (first to third measurement)